>Phycox MAX HypoAllergenic (HA) Soft Chews use the same Hydrolyzed Vegetable Protein and allergy-free formula as Phycox HypoAllergenic, but with increased Phycocyanin and additional active ingredients for older or severely arthritic dogs with common allergies. The balanced blend of natural ingredients in Phycox HA MAX also helps improve and maintain total body health. These chews contain no mammalian protein or grains, yet have the same proprietary blend and efficacy as our other formulations. Only Phycox contains Phycocyanin, a natural anti-inflammatory and antioxidant derived from blue-green algae. Phycocyanin is clinically proven to inhibit COX-2, an enzyme that causes inflammation, and is more effective — with fewer side effects — than similar ingredients in other joint supplements. Phycox MAX HypoAllergenic contains additional phycocyanin and additional active ingredients to meet the needs of older or severely arthritic dogs. Pet owners and veterinarians alike trust Phycox for quality and effectiveness.